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I got a result "\r\n5".
I want to remove "\r\n" and take only number 5.
How do i take the number and remove "\r\n" using javascript replace function.
please anyone help me.
Why do you want to use replace us this
"\r\n5".match(/\d+/)[0]
The trim() method returns the string stripped of whitespace from both ends. trim does not affect the value of the string itself.,should be work
"\r\n5".trim();
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I have a form and I want to accept pipe separated values for a particular field only in the format
4 digits|8digits|any number of digits.
I tried using ^\d{1,6}(|\d{1,6}){3}
But this is wrong.
Try \d{4}\|\d{8}\|\d* if the any number of digits can be 0, if not, then try \d{4}\|\d{8}\|\d+
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I understand that localStorage only stores strings, but lets say the string is '43', would there be a way of printing this as an int?
I tried parseInt() but I keep getting NaN..
You should probably use isNaN() function to determine whether a value is an illegal number (Not-a-Number). If it is a number, you can pass it into parseInt(). Please let me know if you have other issues.
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I would like to understand why the following behavior happens.
Take a look at my Stackblitz example here
I need the "00000000-0000-0000-0000-000000000000" empty guid, to stay in the same format, but for some reason, Typescript changes it to a value 0.
Why is this happening?
Fixed it with this.
[value]="'00000000-0000-0000-0000-000000000000'"
So it is now a string.
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This regular expression is not working as expected.Please suggest other way to validate this regular expression in javascript.
var patt = new RegExp('^(PK\d{2}[A-Z]{4}\d{16})|(\d{9,20})$');
patt.test('PK12FKIE1234567890123456');
You need put both patterns inside a single group so that the anchors should apply to both.
var patt = /^(?:(PK\d{2}[A-Z]{4}\d{16})|(\d{9,20}))$/;
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I'm trying to learn regex. I need to find +46 and replace it with 0. I've been racking my brain but I can't figure out the correct syntax. I'm trying to do it in JS with replace.
Any takers?
Use .replace():
"987654321+46".replace("+46", "0")